# Question #ec8fe

$49 {y}^{2} + 25 {x}^{2}$
$7 {y}^{2} = 49 {y}^{2}$
$5 {x}^{2} = 25 {x}^{2}$
The answer is then $49 {y}^{2} + 25 {x}^{2}$